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Table 1 Reasons for early withdrawal

From: Participant characteristics associated with withdrawal from a large randomized trial of spermicide effectiveness

Reason

Participants N = 635

 

n

%

Discontinued by site

  

   Safety concerns

38

6%

   Site closure/staff error

11

2%

Participant decision, reason provided*

204

32%

   Unwillingness to continue study visits

60

9%

   Objections from partner†

48

8%

   Desire to change contraceptive method†

42

7%

   Separation from partner

40

6%

   Side effects or other medical events†

37

6%

   Cessation of sexual activity

18

3%

   Dissatisfaction with spermicide†

8

1%

   Distrusted contraceptive efficacy†

8

1%

   Desire for pregnancy

7

1%

   Mistaken suspicion of pregnancy

4

1%

Participant decision, reason unknown

382

60%

  1. *Participants may have provided more than one reason
  2. †Considered "related to spermicide" in text